Thanks Nived_Nambiar for your help. I use power automate for my Zoom lectures. For now, I have solved the problem with another flow, but the latest version of power automate does not allow the execution of two flows at the same time, but I open the second flow in programming, and I run it in this way.
It would be useful to place the message boxes wherever we want.
Thanks for your quick reply and regards!
Paolo